1*d353a188SXin Li 2*d353a188SXin LiAndroid Confirm Credential Sample 3*d353a188SXin Li=================================== 4*d353a188SXin Li 5*d353a188SXin LiA sample that demonstrates how to use device credentials (PIN, Pattern, Password) in your app 6*d353a188SXin Li 7*d353a188SXin LiIntroduction 8*d353a188SXin Li------------ 9*d353a188SXin Li 10*d353a188SXin LiThis sample demonstrates how you can use device credentials (PIN, Pattern, Password) in your app 11*d353a188SXin Lito authenticate the user before they are trying to complete some actions. 12*d353a188SXin Li 13*d353a188SXin LiFirst you need to create a symmetric key in the Android Key Store using [KeyGenerator][1] 14*d353a188SXin Liwhich can be only be used after the user has authenticated after the user is authenticated 15*d353a188SXin Liwith their device credentials and pass [KeyGenParameterSpec][2]. 16*d353a188SXin Li 17*d353a188SXin LiBy setting an integer value to the 18*d353a188SXin Li[KeyGenParameterSpec.Builder.setUserAuthenticationValidityDurationSeconds][3], you can consider the 19*d353a188SXin Liuser as authenticated if the user has been authenticated with the device credentials 20*d353a188SXin Liwithin the last x seconds. 21*d353a188SXin Li 22*d353a188SXin LiThen by calling [KeyguardManager.createConfirmDeviceCredentialIntent][4], you can show a screen 23*d353a188SXin Lito confirm device credentials to the user. 24*d353a188SXin Li 25*d353a188SXin Li[1]: https://developer.android.com/reference/javax/crypto/KeyGenerator.html 26*d353a188SXin Li[2]: https://developer.android.com/reference/android/security/keystore/KeyGenParameterSpec.html 27*d353a188SXin Li[3]: https://developer.android.com/reference/android/security/keystore/KeyGenParameterSpec.Builder.html#setUserAuthenticationValidityDurationSeconds%28int%29 28*d353a188SXin Li[4]: https://developer.android.com/reference/android/app/KeyguardManager.html#createConfirmDeviceCredentialIntent%28java.lang.CharSequence,%20java.lang.CharSequence%29 29*d353a188SXin Li 30*d353a188SXin LiPre-requisites 31*d353a188SXin Li-------------- 32*d353a188SXin Li 33*d353a188SXin Li- Android SDK 27 34*d353a188SXin Li- Android Build Tools v27.0.2 35*d353a188SXin Li- Android Support Repository 36*d353a188SXin Li 37*d353a188SXin LiScreenshots 38*d353a188SXin Li------------- 39*d353a188SXin Li 40*d353a188SXin Li<img src="screenshots/1-purchase.png" height="400" alt="Screenshot"/> <img src="screenshots/2-show-confirm-credential.png" height="400" alt="Screenshot"/> <img src="screenshots/3-already-authenticated.png" height="400" alt="Screenshot"/> 41*d353a188SXin Li 42*d353a188SXin LiGetting Started 43*d353a188SXin Li--------------- 44*d353a188SXin Li 45*d353a188SXin LiThis sample uses the Gradle build system. To build this project, use the 46*d353a188SXin Li"gradlew build" command or use "Import Project" in Android Studio. 47*d353a188SXin Li 48*d353a188SXin LiSupport 49*d353a188SXin Li------- 50*d353a188SXin Li 51*d353a188SXin Li- Google+ Community: https://plus.google.com/communities/105153134372062985968 52*d353a188SXin Li- Stack Overflow: http://stackoverflow.com/questions/tagged/android 53*d353a188SXin Li 54*d353a188SXin LiIf you've found an error in this sample, please file an issue: 55*d353a188SXin Lihttps://github.com/googlesamples/android-Confirm Credential 56*d353a188SXin Li 57*d353a188SXin LiPatches are encouraged, and may be submitted by forking this project and 58*d353a188SXin Lisubmitting a pull request through GitHub. Please see CONTRIBUTING.md for more details. 59*d353a188SXin Li 60*d353a188SXin LiLicense 61*d353a188SXin Li------- 62*d353a188SXin Li 63*d353a188SXin LiCopyright 2017 The Android Open Source Project, Inc. 64*d353a188SXin Li 65*d353a188SXin LiLicensed to the Apache Software Foundation (ASF) under one or more contributor 66*d353a188SXin Lilicense agreements. See the NOTICE file distributed with this work for 67*d353a188SXin Liadditional information regarding copyright ownership. The ASF licenses this 68*d353a188SXin Lifile to you under the Apache License, Version 2.0 (the "License"); you may not 69*d353a188SXin Liuse this file except in compliance with the License. You may obtain a copy of 70*d353a188SXin Lithe License at 71*d353a188SXin Li 72*d353a188SXin Lihttp://www.apache.org/licenses/LICENSE-2.0 73*d353a188SXin Li 74*d353a188SXin LiUnless required by applicable law or agreed to in writing, software 75*d353a188SXin Lidistributed under the License is distributed on an "AS IS" BASIS, WITHOUT 76*d353a188SXin LiWARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the 77*d353a188SXin LiLicense for the specific language governing permissions and limitations under 78*d353a188SXin Lithe License. 79
